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Finding the Fourth Proportional to 6,834.55, 9,420.60 and 5,339.86

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Solution

The fourth proportional to 6,834.55, 9,420.60 and 5,339.86 is: 7,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,834.55 : 9,420.60 = 5,339.86 : x
  2. Step 2: Convert to fraction form
    6,834.55/9,420.60 = 5,339.86/x
  3. Step 3: Cross multiply
    6,834.55x = 9,420.60 × 5,339.86
  4. Step 4: Simplify right side
    6,834.55x = 50,304,685.12
  5. Step 5: Solve for x
    x = 50,304,685.12/6,834.55
  6. Step 6: Final answer
    x = 7,360.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.